I have a DPMS AR10 that my son is hunting with. It was originally for me but he has kind of taken to it. The issue I've noticed is that every time I chamber a round it is making a light mark I assume with the firing pin. I have checked it and it seems to do it every time. My son is only 9 and we climb and hunt together. It may be fine but I don't like the idea of it possibly going off when putting a round in. Here is a pic. Tell me what y'all think

If it's denting the primer at all, it's too much for my taste. That's a pretty solid little rap as it's closing to be doing that.

Looks like to me the firing pin is sticking out too far outside the bolt.

I wouldn’t load that again until a qualified gun smith looked at it. WAY to much at stake to risk it.. IMO

That’s very common on all my ar type rifles. It’s the floating firing pin. If you put a magazine in and chamber and extract a round they all have that tiny dot from the firing pin. All mine do. Research more online to ease your mind though.

Get that fixed!

This it's perfectly normal

normal when bolt slams shut the firing pin freefloats ( doesnt have a spring to keep it held back) its not near enough to set that primer off . Every AR platform rifle ever made will do it

I don't know that I've ever noticed my AR doing that....?....But, I'll look at it this evening.

U need to get that looked at by a professional

This. 100% normal

I would still have it checked out. Especially since it's you and your son taking it. Better to be safe than sorry.

100 % normal. Floating firing pin. This is why it is so important to be sure primers are seated correctly if you are reloading ammo for an AR. Primers should be seated about .003-.005 below the case head. If they are flush or protruding above the case head you can get a slam fire which could set off a chain reaction.

One of mine was doing it. I had it fixed. Was like $25.

while terrifying and extremely dangerous, it'd be kinda cool to see if it was planned out. Imagine an entire mag of handloads with the primer not seated deep enough....Full Auto City

100%% normal, all my AR's (6.5 Grendel and .223) do this. As others have said, its due to the floating firing pin.

After reading this entire thread, 8 people say it's not right, 6 people say it's normal, hmmm? So, I go and check mine. It makes a very slight indention when chambered in my .223

Checked mine this morning. Colt 6920LE in .556 Chambered and unchambered 5 rounds each from three diff manufacturers ammo. Independence, Federal and PMC. Not a single round had even a scratch on the primer.

Yall are hilarious

I'll load some up with primers sticking out a little and let you test 'em in YOUR gun.